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Financial Risk Management (Details)
€ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands
Apr. 06, 2018
$ / $
Dec. 31, 2017
COP ($)
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Dec. 31, 2017
CLP ($)
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Dec. 31, 2017
ARS ($)
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Dec. 31, 2017
EUR (€)
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Dec. 31, 2017
USD ($)
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Dec. 31, 2017
MXN ($)
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Dec. 31, 2016
COP ($)
$ / €
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Dec. 31, 2016
CLP ($)
$ / €
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Dec. 31, 2016
ARS ($)
$ / €
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$ / $
Dec. 31, 2016
EUR (€)
$ / €
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$ / $
$ / $
Dec. 31, 2016
USD ($)
$ / €
$ / $
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$ / $
Dec. 31, 2016
MXN ($)
$ / €
$ / $
$ / $
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Dec. 31, 2015
$ / $
Disclosure of nature and extent of risks arising from financial instruments                            
Foreign exchange rate   19.7051 19.7051 19.7051 19.7051 19.7051 19.7051 20.6356 20.6356 20.6356 20.6356 20.6356 20.6356 17.2160
Assets | $             $ 297,220,101           $ 309,054,150  
Liabilities | $             197,563,187           212,769,750  
Foreign currency risk                            
Disclosure of nature and extent of risks arising from financial instruments                            
Foreign exchange rate 18.3333                          
Foreign currency risk | U.S. dollar                            
Disclosure of nature and extent of risks arising from financial instruments                            
Risk exposure on assets           $ 1,506,177 29,679,368         $ 1,947,999 40,198,128  
Risk exposure on liabilities           $ 4,437,506 $ 87,441,499         $ 5,129,395 $ 105,848,143  
Foreign exchange rate   19.7051 19.7051 19.7051 19.7051 19.7051 19.7051 20.6356 20.6356 20.6356 20.6356 20.6356 20.6356  
Foreign currency risk | U.S. dollar | Long-term Debt Designated as Hedging Instrument of the Group's Investment in UHI                            
Disclosure of nature and extent of risks arising from financial instruments                            
Risk exposure on liabilities           $ 2,440,300 $ 48,086,947         $ 2,386,600 $ 49,249,604  
Foreign currency risk | Euros                            
Disclosure of nature and extent of risks arising from financial instruments                            
Risk exposure on assets         € 25,934   612,706       € 16,739   363,672  
Risk exposure on liabilities         € 3,311   $ 78,224       € 8,228   $ 178,762  
Foreign exchange rate | $ / €   23.6256 23.6256 23.6256 23.6256 23.6256 23.6256 21.7260 21.7260 21.7260 21.7260 21.7260 21.7260  
Foreign currency risk | Argentinean pesos                            
Disclosure of nature and extent of risks arising from financial instruments                            
Risk exposure on assets       $ 10,660     $ 11,263     $ 193,558     $ 251,354  
Risk exposure on liabilities       $ 536     $ 566     $ 164,674     $ 213,846  
Foreign exchange rate   1.0566 1.0566 1.0566 1.0566 1.0566 1.0566 1.2986 1.2986 1.2986 1.2986 1.2986 1.2986  
Foreign currency risk | Chilean pesos                            
Disclosure of nature and extent of risks arising from financial instruments                            
Risk exposure on assets     $ 3,718,631       $ 118,996   $ 3,226,447       $ 99,697  
Risk exposure on liabilities     $ 1,864,214       $ 59,655   $ 1,441,423       $ 44,540  
Foreign exchange rate   0.0320 0.0320 0.0320 0.0320 0.0320 0.0320 0.0309 0.0309 0.0309 0.0309 0.0309 0.0309  
Foreign currency risk | Colombian pesos                            
Disclosure of nature and extent of risks arising from financial instruments                            
Risk exposure on assets   $ 4,765,350         $ 31,451 $ 13,722,537         $ 93,313  
Risk exposure on liabilities   $ 9,963,833         $ 65,761 $ 11,757,686         $ 79,952  
Foreign exchange rate   0.0066 0.0066 0.0066 0.0066 0.0066 0.0066 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068  
Foreign currency risk | Other currencies                            
Disclosure of nature and extent of risks arising from financial instruments                            
Assets | $             $ 309,325           $ 96,381  
Liabilities | $             $ 163,215           $ 208,345